/*
 * Copyright 2016-2020 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.data.solr.core.query;

import org.springframework.util.ObjectUtils;

/**
 * @author Christoph Strobl
 * @since 2.1
 */
public final class AnyCriteria extends Criteria implements QueryStringHolder {

	private static final String QUERY_STRING = "*:*";

	private AnyCriteria() {

	}

	public static Criteria any() {
		return new AnyCriteria();
	}

	@Override
	public String getQueryString() {
		return QUERY_STRING;
	}

	@Override
	public String toString() {
		return getQueryString();
	}

	@Override
	public boolean equals(Object obj) {

		return obj instanceof AnyCriteria && ObjectUtils.nullSafeEquals(QUERY_STRING, ((AnyCriteria) obj).getQueryString());
	}

	@Override
	public int hashCode() {
		return ObjectUtils.nullSafeHashCode(QUERY_STRING);
	}
}
